中文说明：该程序的主要目的是给出鲁棒H无穷控制器的设计过程，并通过绘图形象反映仿真结果，具有较高的参考价值。
English Description：
The main purpose of the program is to give the design process of robust H-infinity controller, and to reflect the simulation results by drawing image, which has high reference value.